/* BOORIKO 7.2 — reading system. This file replaces the old interior visual layers. */
:root{--ink:#17324f;--muted:#586b7d;--line:#e3e9ee;--paper:#fff;--soft:#f6f8fa;--accent:#2d6cb0;--radius:8px}
*{box-sizing:border-box}html{scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:#245d98;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto}figure{margin:0}h1,h2,h3,h4{line-height:1.28;color:var(--ink);margin-top:0}p{margin:0 0 18px}ul,ol{padding-left:24px}small{font-size:.82rem}[hidden]{display:none!important}:focus-visible{outline:3px solid #d6932b;outline-offset:4px}.wrap{width:calc(100% - 64px);max-width:1240px;margin-inline:auto}.screen-reader-text,.skip-link:not(:focus){position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link:focus{position:fixed;top:10px;left:10px;z-index:99999;background:#fff;padding:10px 18px}.button,.bk72-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#173b62;border:1px solid #173b62;border-radius:7px;color:#fff;text-decoration:none;font-weight:700;font-size:.9rem;padding:11px 17px;min-height:46px;line-height:1.5}.button-outline{background:#fff;color:#173b62}.bk72-primary:hover,.button:hover{background:#214e7b;color:#fff}.bk72-surface{--bk71-ink:#173b62;--bk71-accent:#2d6cb0;--bk71-soft:#f1f6fc;background:#fff}.bk71-tone-francais{--bk71-ink:#225a98;--bk71-accent:#3681ce;--bk71-soft:#f1f6fc}.bk71-tone-maths{--bk71-ink:#914806;--bk71-accent:#df8727;--bk71-soft:#fff7ed}.bk71-tone-langues{--bk71-ink:#624192;--bk71-accent:#9370c9;--bk71-soft:#f6f2fb}.bk71-tone-espace-temps{--bk71-ink:#80561b;--bk71-accent:#bc8a3f;--bk71-soft:#fcf7ef}.bk71-tone-sciences{--bk71-ink:#17684f;--bk71-accent:#38a480;--bk71-soft:#f0f8f4}.bk71-tone-emc{--bk71-ink:#285e79;--bk71-accent:#4b8cab;--bk71-soft:#f1f7fa}.bk71-tone-evar{--bk71-ink:#8d3e65;--bk71-accent:#c76b95;--bk71-soft:#fcf2f7}.bk71-tone-arts{--bk71-ink:#7b3d8e;--bk71-accent:#b269c9;--bk71-soft:#f8f3fb}.bk71-tone-musique{--bk71-ink:#963459;--bk71-accent:#ce6b8e;--bk71-soft:#fff3f7}.bk71-tone-eps{--bk71-ink:#146b76;--bk71-accent:#37a4b1;--bk71-soft:#f0f9fa}.bk71-tone-famille{--bk71-ink:#246648;--bk71-accent:#52a477;--bk71-soft:#f2f8f3}.bk71-tone-methode{--bk71-ink:#335d93;--bk71-accent:#6590c7;--bk71-soft:#f3f6fc}.bk71-tone-offres{--bk71-ink:#875116;--bk71-accent:#d69744;--bk71-soft:#fff8ef}
/* Shared header: one row on desktop, a compact menu on small screens. */
body .site-header.bk53-header{position:relative;inset:auto;transform:none;width:100%;background:#fff!important;border:0!important;border-bottom:1px solid var(--line)!important;border-radius:0!important;box-shadow:none!important;padding:0!important;z-index:50}body .site-header .site-header-inner{width:calc(100% - 64px);max-width:1240px;min-height:80px;margin:auto;padding:0!important;display:flex;align-items:center;gap:26px;flex-wrap:nowrap}body .site-header .brand{width:154px;min-width:154px;line-height:0}body .site-header .brand img{display:block;width:154px!important;height:auto!important}.site-header .main-nav{display:flex;gap:25px;align-items:center;margin-left:auto}.site-header .main-nav a{font-size:.85rem;font-weight:650;color:#29435c;text-decoration:none;padding:12px 0}.site-header .main-nav a:hover{text-decoration:underline}.site-header .bk53-nav-login{display:none}.site-header .header-action{font-size:.83rem;font-weight:650;color:#29435c;text-decoration:none;white-space:nowrap}.site-header .edp-header-cta{display:inline-flex;align-items:center;justify-content:center;background:#f39328!important;border:0;border-radius:7px!important;color:#17324f!important;padding:11px 16px!important;font-size:.81rem!important;font-weight:750!important;text-decoration:none;white-space:nowrap;min-height:44px;box-shadow:none!important;margin:0!important}.site-header .menu-toggle{display:none}.site-header .bk53-menu-word{display:none}main#contenu{min-height:55vh}
/* Compact introduction, followed by the two reading columns. */
.bk72-intro{width:calc(100% - 64px);max-width:1240px;margin:0 auto;padding:31px 0 29px;border-bottom:1px solid var(--line);background:#fff}.bk72-breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:.76rem;line-height:1.65;color:#62768a;margin-bottom:24px}.bk72-breadcrumbs a{color:#596f83;text-decoration:none}.bk72-breadcrumbs [aria-current]{color:#435c72}.bk72-eyebrow{font-size:.73rem;font-weight:750;letter-spacing:.07em;text-transform:uppercase;color:var(--bk71-ink,#225a98);margin:0 0 11px}.bk72-intro h1{font-size:clamp(1.9rem,3.5vw,2.7rem);line-height:1.17;letter-spacing:-.035em;font-weight:780;max-width:890px;margin:0 0 17px;text-wrap:balance}.bk72-intro-text{max-width:790px;font-size:1.08rem;line-height:1.8;color:#52697e;margin:0}.bk72-shell{display:grid;grid-template-columns:minmax(0,1fr) 282px;column-gap:66px;row-gap:28px;align-items:start;padding-top:36px;padding-bottom:76px}.bk72-main{min-width:0;border:0;border-radius:0;background:none;box-shadow:none;padding:0}.bk72-main .wrap{width:100%;max-width:none;padding-inline:0;margin-inline:0}.bk72-main>article{padding:0;margin:0;border:0;background:transparent}.bk72-main h2{font-size:1.58rem;font-weight:730;letter-spacing:-.02em;margin:0 0 15px}.bk72-main h3{font-size:1.14rem;font-weight:700;margin:23px 0 11px}.bk72-main h4{font-size:1rem;margin:20px 0 10px}.bk72-main p{font-size:1.01rem;line-height:1.85;color:#3f566c}.bk72-main a{color:var(--bk71-ink,#245d98)}.bk72-prose{max-width:820px}.bk72-prose>section,.bk72-prose :is(.bk63-content-section,.bk64-content-section,.bk65-content-section,.bk63-example,.bk64-example,.bk65-example,.bk63-parents,.bk64-parents,.bk65-parents,.bk63-vigilance,.bk64-vigilance,.bk65-vigilance){margin:0 0 34px;padding:0;border:0;background:transparent;border-radius:0;box-shadow:none}.bk72-prose :is(.bk63-ce2-page,.bk64-cm1-page,.bk65-cm2-page,.bk62-ce1-page,.bk-cp-chapitre){margin:0;padding:0;border:0;background:transparent;box-shadow:none;max-width:none}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk45-exercises,.bk71-extra-practice){margin:34px 0;padding:22px 24px;background:var(--bk71-soft);border-left:3px solid var(--bk71-accent);border-radius:0;box-shadow:none}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk71-extra-practice) h2{font-size:1.38rem}.bk72-prose :is(.bk63-question,.bk64-question,.bk65-question){font-weight:650;color:#233e59}.bk72-prose :is(.bk63-mini,.bk64-mini,.bk65-mini,.bk71-kicker){font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;color:var(--bk71-ink);font-weight:750;margin:0 0 10px}.bk72-prose .bk71-topic-faq{margin:34px 0;padding:0;background:none;border:0}.bk72-prose .bk45-remember{margin:30px 0;padding-left:20px;border-left:2px solid #a5b6c7}.bk72-prose .bk45-parent{margin:24px 0}.bk72-prose .bk45-exercise-list>li{padding:10px 0 16px}.bk72-prose :is(.bk63-source,.bk64-source,.bk65-source,.bk45-references){font-size:.79rem;color:#6a7d8e;line-height:1.7;border-top:1px solid var(--line);margin:30px 0;padding-top:16px}.bk72-prose .bk45-references h2{font-size:1rem}.bk72-prose .bk45-references p,.bk72-prose .bk45-references li{font-size:.83rem}.bk72-prose :is(.bk62-notion,.bk-cp-notion){padding:0 0 30px;margin:0 0 30px;border:0;border-bottom:1px solid var(--line);background:none}.bk72-prose :is(.bk62-notion,.bk-cp-notion) h2{font-size:1.5rem}.bk72-prose :is(.bk62-faq,.bk61-question-parent){margin:30px 0}.bk72-prose>section:last-child{margin-bottom:0}details{margin:12px 0}summary{cursor:pointer;font-weight:650;line-height:1.65;padding:9px 0}details>p{padding-top:8px}details[open]>summary{margin-bottom:5px}.bk72-faq{border-top:1px solid var(--line);padding-top:29px!important}.bk72-faq details{padding:8px 0;border-bottom:1px solid var(--line);margin:0}.bk72-faq summary{font-size:.96rem}.bk72-faq p{font-size:.95rem}.bk72-next{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:35px;padding-top:22px;border-top:1px solid var(--line)}.bk72-next h2{width:100%;font-size:1.2rem;margin:0}.bk72-next a{font-size:.91rem;font-weight:650;line-height:1.6}.bk72-class-links{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0}.bk72-class-links a{padding:10px 15px;border:1px solid #dbe4ec;border-radius:6px;text-decoration:none;font-weight:650;font-size:.9rem}
/* One sidebar. No nested cards, no internal scroll area. */
.bk72-sidebar{position:sticky;top:28px;border-left:1px solid var(--line);padding-left:25px;max-height:none;overflow:visible}.bk72-side-content{overflow:visible;max-height:none}.bk72-side-topic{font-weight:700;font-size:.84rem;line-height:1.55;color:var(--bk71-ink);margin:0 0 25px}.bk72-side-topic:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--bk71-accent);margin-right:9px}.bk72-side-topic span{display:block;color:#62768a;font-size:.74rem;font-weight:500;margin:5px 0 0 17px}.bk72-sidebar h2{font-size:.93rem;font-weight:750;margin:0 0 13px;line-height:1.4}.bk72-toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}.bk72-toc li{margin:0 0 11px;font-size:.83rem;line-height:1.55}.bk72-toc a{color:#526a80;text-decoration:none}.bk72-toc a:hover{color:var(--bk71-ink);text-decoration:underline}.bk72-toc details{margin:12px 0}.bk72-toc summary{font-size:.78rem;font-weight:600;padding:0;color:#65798d}.bk72-toc details ol{margin-top:12px}.bk72-parent-invite,.bk72-side-note{margin-top:27px;padding-top:22px;border-top:1px solid var(--line)}.bk72-parent-invite h2{font-size:1.03rem;line-height:1.4;margin-bottom:10px}.bk72-parent-invite p:not(.bk72-eyebrow),.bk72-side-note p{font-size:.83rem;line-height:1.75;color:#64778a;margin-bottom:14px}.bk72-parent-invite .bk72-eyebrow{font-size:.65rem;letter-spacing:.06em;color:#6b7f92;margin-bottom:9px}.bk72-parent-invite .bk72-primary{background:var(--bk71-ink);border-color:var(--bk71-ink);font-size:.77rem;min-height:43px;padding:10px 12px;width:100%;color:#fff}.bk72-parent-invite small{display:block;font-size:.69rem;color:#62768a;margin-top:8px}.bk72-side-links{display:grid;gap:11px;margin-top:25px;padding-top:19px;border-top:1px solid var(--line)}.bk72-side-links a,.bk72-side-note a{font-size:.78rem;line-height:1.6;color:var(--bk71-ink);text-decoration:none}.bk72-side-links a:hover{text-decoration:underline}.bk72-mobile-toc{display:none}
/* Curriculum: light dividers and labelled subject accents. */
.bk44-programmes{background:none;border:0;color:var(--ink)}.bk72-catalogue-actions{display:flex;flex-wrap:wrap;gap:12px 22px;margin-bottom:12px}.bk72-catalogue-actions a{font-size:.9rem;font-weight:650}.bk72-catalogue-status{font-size:.88rem!important;color:#62768a!important;margin-bottom:30px}.bk44-section-heading{display:block;margin:28px 0 20px}.bk44-section-heading h2{font-size:1.55rem}.bk44-section-heading>p,.bk44-eyebrow{font-size:.76rem!important;color:#75879a!important}.bk44-eyebrow{font-weight:750;letter-spacing:.06em;text-transform:uppercase}.bk44-class-grid,.bk61-cards,.bk62-ce1-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0 32px}.bk44-class-card,.bk61-card,.bk62-ce1-card{padding:18px;border:1px solid var(--line);border-radius:6px;text-decoration:none;display:block;box-shadow:none;background:#fff}.bk44-class-card img{display:none}.bk44-class-name{font-size:1.5rem;font-weight:750;display:block}.bk44-class-name small{display:block;font-size:.75rem;color:#73869a;font-weight:400}.bk44-class-card strong{display:block;font-size:.8rem;color:#52697f;margin:8px 0}.bk44-class-card b{display:block;font-size:.78rem;color:var(--bk71-ink)}.bk44-filters{display:flex;flex-wrap:wrap;gap:12px;align-items:end;padding:18px 0;border-block:1px solid var(--line);margin-bottom:17px}.bk44-filters>div{flex:1;min-width:130px}.bk44-filters label{display:block;font-size:.78rem;font-weight:650;margin-bottom:5px}.bk44-filters input,.bk44-filters select{width:100%;min-height:43px;padding:9px;border:1px solid #cbd7e1;border-radius:5px;font-size:16px;color:#28435d;background:#fff}.bk44-filters button,.bk44-inventory-meta button{border:0;background:transparent;color:#46617b;font-size:.76rem;text-decoration:underline;padding:8px 0}.bk44-inventory-meta{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:15px 0}.bk44-inventory-meta p{font-size:.83rem}.bk44-inventory-meta [data-bk44-controls]{display:flex;gap:12px}.bk44-grade-panel{margin:25px 0;border-bottom:1px solid var(--line)}.bk44-grade-panel>summary{display:flex;align-items:center;gap:14px;padding:15px 0}.bk44-grade-badge{font-size:1rem;font-weight:750;min-width:42px;color:var(--bk71-ink)}.bk44-grade-label{flex:1}.bk44-grade-label strong{display:block;font-size:.95rem}.bk44-grade-label small{display:block;color:#62768a;font-size:.73rem}.bk44-plus{font-size:1.1rem;color:#8395a6}.bk44-grade-content{padding:5px 0 20px}.bk44-grade-intro p,.bk44-parent-tip p{font-size:.92rem}.bk44-grade-intro a{font-size:.8rem}.bk44-subject-jumps{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}.bk44-subject-jumps a{font-size:.77rem;font-weight:650}.bk44-subject-panel{border-bottom:1px solid var(--line);margin:15px 0}.bk44-subject-panel>summary{display:flex;align-items:center;gap:12px;padding:15px 0}.bk44-subject-panel>summary>span:nth-child(2){flex:1}.bk44-subject-panel h3{font-size:1rem;margin:0}.bk44-subject-panel small{font-size:.72rem;color:#62768a}.bk44-subject-icon{font-size:1.1rem;background:none;width:32px;color:var(--bk71-ink)}.bk44-subject-content{padding:6px 0 20px}.bk44-subject-intro p,.bk44-subject-note{font-size:.88rem}.bk44-subject-intro a{font-size:.77rem}.bk44-rubric{margin:23px 0}.bk44-rubric h4{font-size:.94rem;border-left:3px solid var(--bk71-accent);padding-left:10px}.bk44-rubric ul{list-style:none;margin:0;padding:0}.bk44-rubric li{display:flex;align-items:baseline;gap:8px;padding:10px 0;border-bottom:1px solid #eef1f4;font-size:.92rem;line-height:1.6}.bk44-notion-dot{color:#94a5b5;font-size:.8rem}.bk44-notion-title{flex:1}.bk44-rubric li>a{flex:1}.bk44-notion-state{font-size:.65rem;white-space:nowrap;color:#62768a}.bk44-notion-state.is-live{color:var(--bk71-ink)}.bk44-example{margin:24px 0;padding-left:17px;border-left:2px solid #c7d8e9}.bk44-example span,.bk44-example small{display:block;font-size:.73rem;color:#6d8195}.bk44-example strong{display:block;font-size:.94rem;line-height:1.6;margin:7px 0}.bk44-example p{font-size:.87rem}.bk44-source-line{display:flex;flex-wrap:wrap;gap:10px;font-size:.7rem;color:#62768a}.bk44-parent-tip{padding-top:17px;margin-top:17px;border-top:1px solid var(--line)}.bk44-parent-tip strong{font-size:.9rem}.bk44-reference-note{font-size:.73rem!important;color:#62768a!important}.bk44-complements-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 20px}.bk44-complements-grid summary{font-size:.9rem}.bk44-complements-grid li{font-size:.85rem}.bk44-method{margin:35px 0;padding-top:25px;border-top:1px solid var(--line)}.bk44-method ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 25px;list-style:none;padding:0}.bk44-method li b,.bk44-method li span{display:block}.bk44-method li b{font-size:.92rem}.bk44-method li span{font-size:.84rem;color:#6b8093}.bk44-method-note{font-size:.83rem!important}.bk44-button{display:inline-block;font-size:.87rem;font-weight:650;padding:7px 0}.bk44-references{margin:32px 0;padding-top:23px;border-top:1px solid var(--line)}.bk44-references h2{font-size:1.2rem}.bk44-references p,.bk44-references li{font-size:.8rem;color:#73879a}.bk70-catalogue-guide,.bk71-topic-faq{margin-top:35px}.bk60-full-index>summary{font-size:.94rem}.bk61-card strong,.bk62-ce1-card strong{display:block;font-size:.95rem;line-height:1.5;margin:8px 0}.bk61-card small,.bk62-ce1-card small,.bk61-card>span,.bk62-ce1-card>span{font-size:.75rem}.bk61-card-mark{display:none!important}
/* Roadmap, family forms and editorial lists. */
.bk72-article-list article{padding:0 0 28px;margin:0 0 28px;border-bottom:1px solid var(--line)}.bk72-article-list h2 a{text-decoration:none}.bk72-article-list article>a{font-size:.86rem;font-weight:650}.bk72-prose .bk43-roadmap-editorial{padding:0;background:none;border:0}.bk43-roadmap-nav{display:flex;flex-wrap:wrap;gap:10px 20px;padding:0 0 25px;margin-bottom:25px;border-bottom:1px solid var(--line)}.bk43-roadmap-nav a{font-size:.84rem}.bk43-chapter{padding:0 0 30px;margin:0 0 30px;border-bottom:1px solid var(--line);background:none;box-shadow:none;border-radius:0}.bk43-chapter-head{display:flex;gap:15px;align-items:flex-start;margin-bottom:15px}.bk43-chapter-index{display:flex;gap:7px;min-width:45px;align-items:center;color:#8ea0b1;font-size:.8rem}.bk43-chapter-index b{display:none}.bk43-chapter-eyebrow{font-size:.7rem!important;letter-spacing:.05em;color:#73879a!important;text-transform:uppercase;margin-bottom:5px}.bk43-chapter-head h2{font-size:1.55rem}.bk43-chapter-head p:last-child{margin-bottom:0}.bk43-chapter-body p{font-size:1rem}.bk43-chapter-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px 22px;list-style:none;padding:0;margin:22px 0}.bk43-chapter-features li{font-size:.86rem;color:#5c7185}.bk43-scenario{margin:25px 0;padding-left:18px;border-left:2px solid #cddaea}.bk43-scenario p{font-size:.9rem}.bk43-scenario small{font-size:.77rem;color:#62768a}.bk43-chapter-closing{font-size:.85rem!important;font-weight:650}.bk43-status{font-size:.72rem;color:#6b8296}.bk72-main .bkacc{max-width:none;padding:0;margin:0}.bk72-main .bkacc-intro{margin-bottom:28px}.bk72-main .bkacc h1{font-size:2rem;line-height:1.2}.bk72-main .bkacc-auth-grid{grid-template-columns:1fr;gap:20px}.bk72-main .bkacc-card{border:1px solid var(--line);border-radius:7px;box-shadow:none;padding:24px}.bk72-main .bkacc h2{font-size:1.35rem}.bk72-main .bkacc-grid{gap:18px}.bk72-main .bkacc-tags span{background:#f5f8fb;border-radius:5px;font-size:.77rem;padding:4px 9px}.bk72-main .bkacc-form{gap:15px}.bk72-main .bkacc-message{background:#f4f8fc;border:1px solid #dce7f0;border-radius:5px;font-size:.89rem}.bk72-main .bkacc-tabs a{font-size:.85rem;border-radius:5px}.bk72-main .bkacc-lesson{margin:30px 0}.bk72-main .bk-play-wrap{padding:0}.bk72-main .bk-play-app-frame{width:100%;max-width:none}.bk72-main .bk70-fallback{padding:0;max-width:none}.bk72-main .bk70-fallback h1{font-size:2rem;line-height:1.2}.bk72-main .bk70-fallback details{border-top:1px solid var(--line);padding:8px 0}.bk72-main .bk70-grade-links{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.bk72-main .bk70-grade-links a{border:1px solid var(--line);border-radius:5px;padding:9px 12px;font-size:.83rem;text-decoration:none}.bk72-main .bk-play-app *{box-sizing:border-box}
/* Footer with a restrained hierarchy. */
body .bk52-footer{background:#f7f9fb;border-top:1px solid var(--line);padding:34px 0 22px;color:#74879a}body .bk52-footer-grid{display:flex;align-items:center;justify-content:space-between;gap:25px}body .bk52-footer-logo img{width:145px;height:auto}body .bk52-footer-grid>p{font-size:.77rem;color:#7b8da0;margin:0}body .bk52-footer nav{display:flex;flex-wrap:wrap;gap:15px}body .bk52-footer a{color:#4c657e;font-size:.78rem;text-decoration:none}body .bk52-footer a:hover{text-decoration:underline}.bk70-footer-more{padding-top:25px;padding-bottom:20px}.bk52-footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:15px;font-size:.7rem}.bk52-footer-bottom a{font-size:.69rem!important}
/* Preserve the approved homepage scene; the reading area follows the lighter system. */
body.booriko-front-v49 .site-header.bk53-header .site-header-inner{width:calc(100% - 64px);max-width:1240px;min-height:80px;padding:0!important;gap:26px}body.booriko-front-v49 .site-header.bk53-header .brand,body.booriko-front-v49 .site-header.bk53-header .brand img{width:154px!important;min-width:154px!important}body.booriko-front-v49 .site-header.bk53-header .bk53-nav{margin-left:auto;gap:25px;flex:0 1 auto}body.booriko-front-v49 .site-header.bk53-header .bk53-nav a{font-size:.85rem;padding:12px 0}body.booriko-front-v49 .site-header.bk53-header .bk53-login{border:0!important;background:none!important;box-shadow:none!important;padding:0!important;font-size:.83rem}body.booriko-front-v49 .site-header.bk53-header .bk53-cta{border-radius:7px!important;font-size:.81rem!important;padding:11px 16px!important;box-shadow:none!important}.bk72-home-banner .bk53-hero-scene{inset:0!important}.bk72-home-banner .bk53-hero{margin:0;min-height:550px}.bk72-main .bk53-home{background:#fff;overflow:visible}.bk72-main .bk53-benefits{padding:0 0 30px}.bk72-main .bk53-benefits-intro{padding:0;text-align:left;display:block;max-width:none}.bk72-main .bk53-benefits-intro>p{font-size:.7rem;letter-spacing:.08em;color:#7b8e9f}.bk72-main .bk53-benefits-intro h2{font-size:1.8rem;margin-bottom:14px}.bk72-main .bk53-benefits-intro>div{font-size:1rem;color:#5a7186;line-height:1.8}.bk72-main .bk53-benefit-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:25px;margin-top:28px;padding:0;max-width:none}.bk72-main .bk53-benefit-card{display:block;padding:0;background:transparent;box-shadow:none;border:0;border-radius:0;text-align:left}.bk72-main .bk53-benefit-card>strong{display:block;font-size:1rem;margin:10px 0 8px}.bk72-main .bk53-benefit-card>span:last-child{font-size:.88rem;line-height:1.7;color:#73879a}.bk72-main .bk53-feature-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:5px}.bk72-main .bk53-feature-icon svg{width:23px;height:23px;stroke:currentColor;fill:none;stroke-width:1.5}.bk72-main .bk52-section,.bk72-main .bk60-home-proof,.bk72-main .bk70-home-extra{padding:32px 0;background:none;border-top:1px solid var(--line)}.bk72-main .bk52-intro,.bk72-main .bk52-programmes,.bk72-main .bk52-duo,.bk72-main .bk60-proof-grid{display:grid;grid-template-columns:1fr;gap:18px}.bk72-main .bk52-eyebrow,.bk72-main .bk70-kicker{font-size:.7rem;font-weight:750;letter-spacing:.07em;text-transform:uppercase;color:#71879a}.bk72-main .bk52-text-link{font-size:.87rem;font-weight:650}.bk72-main .bk52-button{display:inline-flex;align-items:center;gap:8px;border-radius:7px;padding:10px 16px;background:#173b62;color:#fff;text-decoration:none;font-size:.86rem;font-weight:650}.bk72-main .bk52-button-primary{background:#f39328;color:#17324f}.bk72-main .bk52-grade-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.bk72-main .bk52-grade{display:flex;justify-content:space-between;align-items:center;padding:13px 12px;border:1px solid var(--line);border-radius:5px;text-decoration:none;font-size:.87rem;font-weight:750}.bk72-main .bk52-grade svg{width:15px;height:15px;stroke:currentColor;fill:none}.bk72-main .bk52-preview{padding:22px;background:#f5f8fb;border-left:2px solid #c8d8e8;border-radius:0;box-shadow:none}.bk72-main .bk52-preview-orbit{display:none}.bk72-main .bk52-preview>span{font-size:.68rem;letter-spacing:.06em;color:#71879a}.bk72-main .bk52-preview strong{display:block;font-size:1.4rem;line-height:1.3;margin:9px 0}.bk72-main .bk52-preview small{font-size:.79rem;color:#7a8c9d}.bk72-main .bk52-pricing-inner{display:block}.bk72-main .bk52-pricing-actions{display:flex;flex-wrap:wrap;align-items:center;gap:17px;margin-top:16px}.bk72-main .bk60-concrete-demo,.bk72-main .bk70-concrete-demo{background:none;padding:0 0 0 18px!important;border-left:2px solid #ccdaea;border-radius:0;box-shadow:none}.bk72-main .bk70-concrete-demo>span{font-size:.7rem;letter-spacing:.06em;color:#75899c}.bk72-main .bk70-concrete-demo h3{font-size:1.3rem}.bk72-main .bk70-concrete-demo p{font-size:.93rem}.bk72-main .bk70-step-grid{display:grid;grid-template-columns:1fr;gap:20px;margin:22px 0}.bk72-main .bk70-step-grid article{padding:0;border:0;border-radius:0;background:none}.bk72-main .bk70-step-grid h3{font-size:1.05rem;margin-top:0}.bk72-main .bk70-step-grid p{font-size:.94rem}.bk72-main .bk70-step-grid a{font-size:.85rem;font-weight:650}.bk72-main .bk70-faq{margin-top:28px}.bk72-main .bk70-faq details{border-bottom:1px solid var(--line)}.bk72-main .bk70-faq summary{font-size:.94rem}.bk72-main .bk48-desk{height:180px;min-height:180px;border-radius:0;margin-top:25px}.bk72-main .bk60-home-note{font-size:.84rem;color:#7b8d9f}.bk72-main .bk60-home-proof h2{font-size:1.7rem}
@media(max-width:1100px){.bk72-shell{grid-template-columns:minmax(0,1fr) 245px;gap:38px}.site-header .main-nav{gap:18px}body .site-header .site-header-inner{gap:20px}.site-header .main-nav a{font-size:.79rem}.site-header .header-action{font-size:.77rem}}
@media(max-width:900px){body .site-header.bk53-header .site-header-inner,body.booriko-front-v49 .site-header.bk53-header .site-header-inner{width:calc(100% - 40px);max-width:none;min-height:70px;gap:14px;flex-wrap:nowrap;position:relative}body .site-header .main-nav,body.booriko-front-v49 .site-header.bk53-header .main-nav{display:none!important;position:absolute;top:100%;left:0;right:0;width:100%;margin:0!important;background:#fff;border:1px solid var(--line);padding:14px 20px;box-shadow:0 12px 20px #1d35580a;z-index:80}body .site-header .main-nav.open,body.booriko-front-v49 .site-header.bk53-header .main-nav.open{display:flex!important;flex-direction:column;align-items:stretch;gap:0}body .site-header .main-nav a{padding:10px 0!important;font-size:.88rem!important}.site-header .bk53-nav-login{display:block!important}body .site-header .header-action{display:none!important}body .site-header .menu-toggle,body.booriko-front-v49 .site-header.bk53-header .menu-toggle{display:inline-flex!important;align-items:center;justify-content:center;order:3;flex:0 0 40px;min-width:40px;max-width:40px;width:40px;height:42px;min-height:42px;margin:0!important;padding:0;border:1px solid #dae3eb;border-radius:6px;background:#fff;color:#173b62}body .site-header .brand{order:1}body .site-header .edp-header-cta{order:2;margin-left:auto!important}body .site-header .bk53-menu-word{display:none}.bk72-shell{grid-template-columns:minmax(0,1fr) 225px;gap:28px}.bk72-sidebar{padding-left:20px}.bk72-main .bk52-grade-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:800px){.wrap,.bk72-intro{width:calc(100% - 40px)}.bk72-intro{padding-top:24px;padding-bottom:24px}.bk72-intro h1{font-size:2.05rem;max-width:650px}.bk72-intro-text{font-size:1rem}.bk72-breadcrumbs{font-size:.71rem;margin-bottom:20px}.bk72-shell{display:flex;flex-direction:column;gap:25px;padding-top:23px;padding-bottom:50px}.bk72-main,.bk72-sidebar{width:100%}.bk72-sidebar{position:static;border-left:0;border-top:1px solid var(--line);padding:25px 0 0}.bk72-toc{display:none}.bk72-side-topic{margin-bottom:16px}.bk72-parent-invite{margin-top:17px;padding-top:0;border-top:0;max-width:420px}.bk72-parent-invite .bk72-primary{width:auto}.bk72-side-links{max-width:550px}.bk72-mobile-toc{display:block;margin:0;padding:0 0 15px;border-bottom:1px solid var(--line);width:100%}.bk72-mobile-toc summary{padding:0;font-size:.88rem;color:#536d84;font-weight:650}.bk72-mobile-toc ol{padding-left:20px;font-size:.88rem;line-height:1.7;margin-bottom:0}.bk72-mobile-toc li{padding:5px 0}.bk72-main h2{font-size:1.45rem}.bk72-main p{font-size:1rem;line-height:1.85}.bk72-prose{max-width:none}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk45-exercises,.bk71-extra-practice){padding:19px 20px;margin:28px 0}.bk44-class-grid,.bk61-cards,.bk62-ce1-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bk72-main .bkacc-grid{grid-template-columns:1fr}.bk72-main .bk52-grade-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.bk72-main .bk53-benefit-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.bk52-footer-grid{flex-wrap:wrap}body .bk52-footer-grid>p{display:none}.bk72-main .bk52-section{padding-block:26px}}
@media(max-width:500px){body{font-size:16px}.wrap,.bk72-intro{width:calc(100% - 36px)}body .site-header.bk53-header .site-header-inner,body.booriko-front-v49 .site-header.bk53-header .site-header-inner{width:calc(100% - 28px);gap:8px;min-height:65px}body .site-header .brand,body .site-header .brand img,body.booriko-front-v49 .site-header.bk53-header .brand,body.booriko-front-v49 .site-header.bk53-header .brand img{width:112px!important;min-width:112px!important}body .site-header .edp-header-cta,body.booriko-front-v49 .site-header.bk53-header .edp-header-cta{font-size:.69rem!important;padding:9px 11px!important;min-height:40px}body .site-header .menu-toggle{flex-basis:36px;min-width:36px;max-width:36px;width:36px;min-height:40px;height:40px}.bk72-intro h1{font-size:1.82rem;line-height:1.2}.bk72-intro-text{font-size:.98rem}.bk72-intro .bk72-eyebrow{font-size:.66rem}.bk72-breadcrumbs [aria-current]{display:none}.bk72-breadcrumbs{font-size:.69rem;gap:6px}.bk72-main h2{font-size:1.35rem}.bk72-main p{font-size:.98rem}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk45-exercises,.bk71-extra-practice){padding:17px 16px}.bk72-next{gap:12px}.bk44-filters{gap:14px}.bk44-filters>div{min-width:100%}.bk44-inventory-meta{display:block}.bk44-rubric li{flex-wrap:wrap;font-size:.89rem}.bk44-notion-state{margin-left:auto}.bk44-complements-grid,.bk44-method ol,.bk43-chapter-features{grid-template-columns:1fr}.bk44-grade-label strong{font-size:.88rem}.bk44-grade-label small{font-size:.68rem}.bk44-class-grid,.bk61-cards,.bk62-ce1-grid{grid-template-columns:1fr 1fr}.bk72-main .bk52-grade-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.bk72-main .bk53-benefit-cards{gap:22px 16px}.bk72-main .bk53-benefit-card>span:last-child{font-size:.8rem}.bk72-main .bk53-benefit-card>strong{font-size:.9rem}.bk72-main .bkacc-card{padding:20px}.bk52-footer-bottom{display:block}.bk52-footer-bottom nav{margin-top:12px}.bk70-footer-more{gap:11px!important}body .bk52-footer-grid{gap:15px}body .bk52-footer nav{gap:11px}body .bk52-footer a{font-size:.73rem}.bk72-main .bk48-desk{height:145px;min-height:145px}}
@media(max-height:760px) and (min-width:801px){.bk72-sidebar{position:static}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
@media print{.site-header,.bk52-footer,.bk72-sidebar,.bk72-mobile-toc{display:none!important}.bk72-shell{display:block;width:100%;padding:20px}.bk72-intro{width:100%;padding:20px}.bk72-prose details>*{display:block!important}a{color:#000!important}}

.bk72-surface .bk44-tone-francais{--bk71-ink:#225a98;--bk71-accent:#3681ce;--bk71-soft:#f1f6fc}

.bk72-surface .bk44-tone-maths{--bk71-ink:#914806;--bk71-accent:#df8727;--bk71-soft:#fff7ed}

.bk72-surface .bk44-tone-langues{--bk71-ink:#624192;--bk71-accent:#9370c9;--bk71-soft:#f6f2fb}

.bk72-surface .bk44-tone-espace-temps{--bk71-ink:#80561b;--bk71-accent:#bc8a3f;--bk71-soft:#fcf7ef}

.bk72-surface .bk44-tone-sciences{--bk71-ink:#17684f;--bk71-accent:#38a480;--bk71-soft:#f0f8f4}

.bk72-surface .bk44-tone-emc{--bk71-ink:#285e79;--bk71-accent:#4b8cab;--bk71-soft:#f1f7fa}

.bk72-surface .bk44-tone-evar{--bk71-ink:#8d3e65;--bk71-accent:#c76b95;--bk71-soft:#fcf2f7}

.bk72-surface .bk44-tone-arts{--bk71-ink:#7b3d8e;--bk71-accent:#b269c9;--bk71-soft:#f8f3fb}

.bk72-surface .bk44-tone-musique{--bk71-ink:#963459;--bk71-accent:#ce6b8e;--bk71-soft:#fff3f7}

.bk72-surface .bk44-tone-eps{--bk71-ink:#146b76;--bk71-accent:#37a4b1;--bk71-soft:#f0f9fa}
.admin-bar .bk72-sidebar{top:54px}.bk72-topic-name{font-size:inherit;font-weight:700;color:inherit}
@media(max-width:360px){body .site-header .brand,body .site-header .brand img,body.booriko-front-v49 .site-header.bk53-header .brand,body.booriko-front-v49 .site-header.bk53-header .brand img{width:98px!important;min-width:98px!important}body .site-header .edp-header-cta,body.booriko-front-v49 .site-header.bk53-header .edp-header-cta{font-size:.65rem!important;padding:8px 9px!important}body .site-header .menu-toggle{flex-basis:34px;min-width:34px;max-width:34px;width:34px}}
@font-face{font-family:'Manrope';src:url('fonts/Manrope-variable.woff2') format('woff2');font-weight:400 800;font-style:normal;font-display:swap}
.bk72-intro h1,.bk72-main h2,.bk72-main h3,.bk72-sidebar h2,.bk72-main .bk44-class-name,.site-header .main-nav a{font-family:'Manrope',system-ui,sans-serif}.bk72-intro h1{font-weight:780;letter-spacing:-.035em}.bk72-main h2{font-weight:750}.bk72-intro>.bk72-eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--bk71-soft);color:var(--bk71-ink);border-radius:5px;padding:4px 9px;font-size:.68rem;letter-spacing:.045em;margin-bottom:15px}.bk72-intro>.bk72-eyebrow:before{content:"";width:6px;height:6px;background:var(--bk71-accent);border-radius:50%}.bk72-prose :is(.bk63-example,.bk64-example,.bk65-example)>p{border-left:2px solid #c9d9e8;padding-left:18px;color:#4a647a}.bk72-prose :is(.bk63-vigilance,.bk64-vigilance,.bk65-vigilance){border-left:2px solid #ddb46d;padding-left:18px}.bk72-prose :is(.bk63-vigilance,.bk64-vigilance,.bk65-vigilance) h2{font-size:1.18rem}.bk72-prose :is(.bk63-parents,.bk64-parents,.bk65-parents) h2{font-size:1.25rem}.bk72-prose .bk71-extra-practice{border-left:3px solid var(--bk71-accent);background:var(--bk71-soft)}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk71-extra-practice)>details{border-top:1px solid #dce6ee;margin-top:14px;padding-top:3px}.bk72-prose :is(.bk63-exercise,.bk64-exercise,.bk65-exercise,.bk71-extra-practice)>details summary{font-size:.9rem;color:var(--bk71-ink)}
.bk72-prose{max-width:780px}.bk72-main .bk72-prose p{font-size:18px;line-height:1.8}.bk72-main .bk72-prose p:is(.bk63-mini,.bk64-mini,.bk65-mini,.bk71-kicker){font-size:11px;line-height:1.5;letter-spacing:.05em}.bk72-main .bk72-prose p:is(.bk63-source,.bk64-source,.bk65-source){font-size:13px;line-height:1.7;color:#62768a}.bk72-main .bk72-prose .bk45-references p,.bk72-main .bk72-prose .bk45-references li{font-size:13.5px;line-height:1.7}.bk72-main .bk72-prose details p{font-size:17px}
@media(max-width:800px){.bk72-main .bk72-prose p{font-size:17px;line-height:1.85}.bk72-main .bk72-prose details p{font-size:16px}.bk72-main .bk72-prose p:is(.bk63-mini,.bk64-mini,.bk65-mini,.bk71-kicker){font-size:10.5px}.bk72-main .bk72-prose p:is(.bk63-source,.bk64-source,.bk65-source){font-size:12px}}